LAS VEGAS — After Brad Keselowski had such a strong season in 2011, he signed a contract extension with Penske Racing that was termed a multiple-year agreement.

His 2012 Sprint Cup championship so far hasn’t resulted in anything new or different.

Keselowski said that increasing the length of his contract hasn’t been discussed in the weeks following his championship run.

“I’ve got plenty of years left on my current one,” Keselowski said, while not revealing how long his current contract is for. “So there’s no reason to rush into it. I think we all just want to enjoy what we’ve got right now.”

Team owner Roger Penske also said there was no urgency. It is believed that Keselowski’s deal is through at least 2014 or 2015.

“We have a long-term agreement,” Penske said. “We have options. As long as you’re successful, I don’t think you need a contract.”

Crew chief Paul Wolfe also signed a multiyear deal after last season. Penske believes that the success of Wolfe and Keselowski should give the team some stability, as well as some extra clout when trying to hire people.

“The key thing about both Brad and Paul is they’re able to help us attract good people,” Penske said. “It’s amazing. That’s why Hendrick is so strong. They’ve had success and had longevity with their people.”

While Keselowski’s No. 2 team is stable, Penske’s other Cup car is in transition.

AJ Allmendinger replaced Kurt Busch after Busch was released following the 2011 season for a series of run-ins with the media and a disagreement over the direction of the team.

Allmendinger was 23rd in the standings in June when he failed a drug test and was suspended by NASCAR and released by Penske.

Sam Hornish Jr. replaced Allmendinger for the remainder of the season but Joey Logano will step into the No. 22 ride starting next season.

Penske said that Logano also has a long-term contract.

“We think that’s going to make a real difference in the team, too,” Penske said. “We needed Kurt. He won races for us. But he wasn’t as happy there where he needed to be, from what I understand.

“AJ did a great job and could have been a future champion but unfortunately had a misstep. I regard him as a friend and a great competitor.”

Hornish, a former IndyCar champion who had spent the 2008-2010 seasons in Cup for Penske, will run in the Nationwide Series again for the organization. He was fourth but winless in the series this year.

“You had to look at the specifics,” Penske said. “I heard of a guy (in Logano) who had won eight or nine Nationwide races and won a Cup race. It was obvious we had to look at results.

“Sam knew that. I talked to him about it. He’s disappointed, I’m sure, but at the end of the day I think we made the right decision.”